CN204270050U - A kind of intelligent controller of control and protective switching device - Google Patents

Abstract

The utility model discloses a kind of intelligent controller of control and protective switching device; comprise display module, control panel and secondary supply module; wherein; secondary supply module can for the display module on control panel powers directly show failure code under contactor mechanism off-state; thus reach do not need dismounting load carry out troubleshooting, substantially reduce maintenance time.Intelligent controller of the present utility model is provided with secondary supply module; still intelligent controller is powered when contactor mechanism disconnects; by preset failure code in processing module; directly show fault by display module, solve the problem that control and protective switching device exists troubleshooting difficulty under fault off-position.

Description

An Intelligent Controller for Controlling and Protecting Switching Appliances

technical field

The utility model relates to an intelligent controller, in particular to an intelligent controller for controlling and protecting switch appliances.

Background technique

Control and protection switchgear, or CPS, integrates low-voltage electrical appliances such as traditional circuit breakers, contactors, thermal relays, and fuses.

The control and protection switching device includes an intelligent controller (including a control board, which is also provided with a display module for displaying fault codes), which controls the load operation of the control and protection switching device. In the prior art, the intelligent control The contactor takes power from the rear end of the contactor mechanism (the contactor mechanism includes a contactor, including a front end and a rear end, and its working principle is the same as that of a contactor. When the contactor mechanism is closed, its front end and the rear end are conducting When the contactor mechanism is disconnected, the front end and the rear end are disconnected. Among them, the front end is connected to a three-phase power supply, and the rear end is connected to an external load. When the contactor mechanism is disconnected, the front end is charged and the rear end is not. charged).

The patent with the existing notification number CN202475019U discloses an intelligent controller for controlling and protecting switching appliances. A power supply circuit, the IC controller is externally connected to the main circuit for voltage sampling, and through comparison processing, functions such as overvoltage protection and undervoltage protection are completed; the current signal processing circuit is electrically connected to the current input port; the voltage processing circuit is electrically connected to the voltage input port; through the optocoupler conversion circuit, the switch state port and the temperature control switch port are electrically connected; through the leakage input port, the leakage input port is electrically connected; through the relay conversion circuit, the opening and closing port and the tripping alarm port are electrically connected.

If the above-mentioned control and protection switching devices have faults such as short circuit, overload, and undervoltage, the contactor mechanism will be disconnected and the rear end of the contactor will be powered off. Therefore, the intelligent controller will also be powered off. To perform fault detection, you need After dismantling the load of the control and protection switchgear, do further investigation after re-closing with no load. In this way, there is a problem that it is difficult to troubleshoot the control and protection switchgear without removing the load.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide an intelligent controller for controlling and protecting switching appliances, including a control board, a display module is arranged on one side of the control board, and further includes:

The secondary power supply module, which is arranged on the other side of the control board, is coupled to the front end of the contactor mechanism to receive the power supply voltage, and is also coupled to the control board to provide the control board with an operating voltage;

Wherein, the secondary power supply module can supply power to the display module on the control board to directly display the fault code when the contactor mechanism is disconnected.

By adopting the above technical scheme, since the secondary power supply module is powered from the front end of the contactor mechanism, and when the contactor mechanism is disconnected due to a fault, the rear end is powered off and the front end is not powered off, and the display module is powered from the The front end of the contactor mechanism, so the display module can directly display the fault code when the circuit breaker cuts off the circuit, so that there is no need to disassemble the load for troubleshooting, which greatly shortens the maintenance time.

The utility model is further set to:

The secondary power supply module includes a transformer, and the transformer includes:

a primary side coupled to the front end of the contactor mechanism; and

The secondary side is coupled to the control board.

The number of turns of the coil on the secondary side is smaller than the number of turns of the coil on the primary side.

With this setting, even if the contactor mechanism is disconnected due to faults such as short circuit, overload, and undervoltage in the control and protection switching appliances, the intelligent controller will not be powered off, because the secondary power supply module takes power from the front end of the contactor mechanism, and The 220V AC voltage is converted into an AC voltage with a lower amplitude, and then converted into a DC voltage by the rectifier module to supply the control board. The display module can directly display the preset fault codes in the processing module. The intelligent controller of the utility model is equipped with a secondary power supply module, which can still supply power to the intelligent controller when the contactor mechanism of the control and protection switch is disconnected, and the load of the control and protection switch is provided by setting a processing module. The fault is judged, and the fault is directly displayed through the display module, which solves the problem of difficult troubleshooting of the control and protection switching appliances in the state of power failure.

The specific connection relationship of the intelligent controller of the control and protection switch electrical appliances of the present utility model is as follows:

The intelligent controller of the control and protection switching device of the present invention is shown in Figure 1, and is arranged inside the control and protection switching device. The intelligent controller of the control and protection switching device is shown in Figure 2, including a display module, a control board and a secondary power supply module, the display module is disposed on one side of the control board, the secondary power supply module is disposed on the other side of the control board, and the secondary power supply module is coupled to the front end of the contactor mechanism to receive The power supply is also coupled to the control board to provide operating voltage for the control board, and the processing module is arranged on the control board and coupled to the display module.

Description of drawings

Fig. 1 is a structural schematic diagram of control and protection switchgear;

Fig. 2 is a structural schematic diagram of the intelligent controller of the present invention.

In the figure: 1. Control and protection switching appliances; 2. Intelligent controller; 3. Digital tube group; 4. LED lamp group; 5. Transformer; 6. Processing module; 7. Control board; 71. First circuit board; 72. A second circuit board.

Detailed ways

In the traditional control and protection switching device 1, the intelligent controller 2 takes power from the back end of the contactor mechanism. At this time, the intelligent controller 2 will be powered off, and the display module will not be able to display the fault. At this time, it is necessary to troubleshoot the fault. It is difficult to troubleshoot and time-consuming and labor-intensive.

In view of the above problems, the utility model provides the following technical solutions: the control and protection switching device 1 of the utility model is shown in Figure 1, which includes an intelligent controller 2, and the intelligent controller 2 includes a display module, a processing module 6, The secondary power supply module and the control board 7, the control board 7 is two circuit boards, including a first circuit board 71 and a second circuit board 72, the first circuit board 71 and the second circuit board 72 are connected by pin headers , the first circuit board 71 is provided with a processing module 6 for analyzing faults, the processing module 6 is coupled to the display module, and the fault code can be displayed in the case of a fault in the control and protection switching device 1, and the display The module includes a digital tube group 3 and an LED lamp group 4 , and the digital tube group 3 and the LED lamp group 4 are both coupled to the processing module 6 .

The second circuit board 72 is provided with a secondary power supply module, the secondary power supply module is coupled to the front end of the contactor mechanism to receive the primary side voltage, and the secondary power supply module is also coupled to the control board 7 to control The board 7 provides the working voltage. When the contactor mechanism is disconnected due to a fault, the secondary side is powered off and the primary side is not powered on. Therefore, the secondary power supply module is not affected, so that the intelligent controller 2 is still working and The fault code is directly displayed, the secondary power supply module includes a transformer 5, the transformer 5 includes a primary side and a secondary side, the primary side is coupled to the front end of the contactor mechanism, that is to say, it takes power from the primary side voltage, so The secondary side is coupled to the control board 7 to provide the control board 7 with an operating voltage. By setting the coil turns ratio of the transformer and converting the 220V AC voltage into an AC voltage with a lower amplitude, and then converting it into a DC voltage to supply the control board through the rectification module, even if the circuit breaker mechanism is disconnected due to a fault, its The primary side voltage does not lose power, and the transformer is powered by the primary side voltage, so the intelligent controller can still obtain the output voltage of the transformer.

Through the above settings, since the intelligent controller 2 of the present invention takes power from the front end of the contactor mechanism through the transformer, when the contactor mechanism is disconnected due to a fault, its rear end will be powered off, and the transformer will take power from the contactor mechanism. The front end of the switch mechanism, so the power is not interrupted, so the intelligent controller will not be powered off, the intelligent controller is powered by the DC voltage output by the transformer, the fault is analyzed by the processing module 6, and directly displayed on the display module, so There is no need to disassemble the load side of the control and protection switching device 1 for troubleshooting, which solves the problem of difficult troubleshooting of the control and protection switching device 1 in a power-off state.

To sum up, the intelligent controller of the utility model is equipped with a secondary power supply module, which can still supply power to the intelligent controller when the control and protection switch is powered off, and the load of the control and protection switch is set by setting a processing module. The fault can be judged, and the fault can be directly displayed through the display module, which solves the problem of difficult troubleshooting of the control and protection switching appliances in the state of power failure.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (3)

1. an intelligent controller for control and protective switching device, comprises control panel, and the side of described control panel is provided with display module, it is characterized in that: also comprise:

Secondary supply module, it is arranged at the opposite side of control panel, and the front end being coupled to contactor mechanism, to receive supply voltage, is also coupled to control panel and thinks that control panel provides operating voltage;

Wherein, secondary supply module can for the display module on control panel powers directly show failure code under contactor mechanism off-state.

2. the intelligent controller of control and protective switching device according to claim 1, is characterized in that: described secondary supply module comprises transformer, and described transformer comprises:

Primary side, it is coupled to the front end of contactor mechanism; And

Secondary side, it is coupled to control panel.

3. the intelligent controller of control and protective switching device according to claim 2, is characterized in that: the coil turn of described secondary side is less than the coil turn of primary side.